That would be Directional Selection so the answer is D.
1. A gene is section of DNA that codes for a specific trait.
2. 2,001
Spermatogenesis is the process in witch spermatozoa are produced from male primordial germ cells by way of mitosis and meiosis.
Oogenesis is the process by which the female gametes, or ova, are created.
This Does not look like a qustion may you please take it down